My dad is restoring a 1969 MG Midget. The right turn signal stopped working. Using nothing more than a voltmeter, I found a disconnected wire and a short to the frame.
I replaced the entire length of wire that was failing with $3 worth of wire, solder, and heat shrink tubing.
The lesson here is repairability and simplicity.
We’re constantly lectured to be “environmentally aware” by companies that no longer ensure their products will last a lifetime. There is 0 reason a modern phone couldn’t be used for the rest of your life. My Brother printer is nearing 12 years and is still on the same damn print cartridge. My Neato robotics vacuum has had countless parts replaced and is about the same age.
If you truly want to be a good steward of the earth, stop demanding/consuming latest and greatest, endless product and UI refreshes, and instead demand 30+ years out of a product (with small repairs).
I installed them on an old Marantz amp, which is also connected to my (new) TV. As he visited me, he couldn't believe the incredible sound coming from his own speakers. My friends are shocked by it too, thinking I'm some audio buff that invested 20K.
My dad regretted the gift, went to buy the same amp yet with new speakers. Various sets of it, and failed to come close to the ancient set.
I'm not sure what exactly was innovated in 35 years of audio, but my guess would be costs, not quality.